X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fthecheat;a=blobdiff_plain;f=ChazUpdate.m;fp=ChazUpdate.m;h=33de369d602719c1fdf8105ddbd64de8aedb857f;hp=0000000000000000000000000000000000000000;hb=d27548f80fe411fda2ee69c74a24eab4292267e9;hpb=e8d51183acdd2410a38dcf8f0efbf7c30cd6c581

diff --git a/ChazUpdate.m b/ChazUpdate.m
new file mode 100644
index 0000000..33de369
--- /dev/null
+++ b/ChazUpdate.m
@@ -0,0 +1,323 @@
+//
+//  ChazUpdate.m
+//  The Cheat
+//
+//  Created by Chaz McGarvey on 1/5/05.
+//  Copyright 2005 Chaz McGarvey. All rights reserved.
+//
+
+#import "ChazUpdate.h"
+
+
+// an NSError that an have an error statement associated with it
+@interface ChazUpdateError : NSError
+{
+	NSString *_errorString;
+}
++ (id)errorWithString:(NSString *)string;
+- (id)initWithString:(NSString *)string;
+- (void)setErrorString:(NSString *)string;
+- (NSString *)localizedDescription;
+@end
+@implementation ChazUpdateError
++ (id)errorWithString:(NSString *)string
+{
+	return [[[ChazUpdateError alloc] initWithString:string] autorelease];
+}
+- (id)initWithString:(NSString *)string
+{
+	if ( self = [super initWithDomain:@"ChazUpdateError" code:1 userInfo:nil] ) {
+		[self setErrorString:string];
+	}
+	return self;
+}
+- (void)setErrorString:(NSString *)string
+{
+	[string retain];
+	[_errorString release];
+	_errorString = string;
+}
+- (NSString *)localizedDescription
+{
+	return _errorString;
+}
+@end
+
+
+@interface ChazUpdate : NSObject
+{
+	NSString *_name;
+	
+	NSURLConnection *_connection;
+	NSHTTPURLResponse *_response;
+	NSMutableData *_responseData;
+	
+	BOOL _verbose;
+}
+
+- (id)initWithURL:(id)url name:(NSString *)name verbose:(BOOL)verbose;
+- (void)kill;
+
+@end
+
+
+@implementation ChazUpdate
+
+
+#pragma mark Initialization
+
+- (id)initWithURL:(id)url name:(NSString *)name verbose:(BOOL)verbose
+{
+	NSURL *theURL;
+	
+	if ( self = [super init] )
+	{
+		// figure out what type of URL was passed
+		if ( [url isKindOfClass:[NSURL class]] ) {
+			theURL = url;
+		}
+		else if ( [url isKindOfClass:[NSString class]] ) {
+			theURL = [[[NSURL alloc] initWithString:url] autorelease];
+		}
+		else {
+			if ( verbose ) {
+				NSRunAlertPanel( @"Update Check Failed",
+								 @"Could not determine the location of the version information file.", @"OK", nil, nil );
+			}
+			[self release];
+			return nil;
+		}
+		// save the name
+		if ( name ) {
+			_name = [name retain];
+		}
+		else {
+			_name = [[NSString stringWithString:@""] retain];
+		}
+		_verbose = verbose;
+		
+		// create the request
+		_connection = [[NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL:theURL
+																			   cachePolicy:NSURLRequestReloadIgnoringCacheData
+																		   timeoutInterval:30.0] delegate:self] retain];
+		_response = nil;
+		_responseData = [[NSMutableData alloc] init];
+	}
+	return self;
+}
+
+
+- (void)dealloc
+{
+	// cleanup
+	[_name release];
+	
+	[_connection release];
+	[_response release];
+	[_responseData release];
+	
+	[super dealloc];
+}
+
+- (void)kill
+{
+	[self release];
+	self = nil;
+}
+
+
+#pragma mark NSURLConnection Delegate
+
+- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
+{
+	if ( _response ) {
+		// another response, chop the data
+		[_responseData setLength:0];
+		[_response release];
+	}
+	_response = [response retain];
+}
+
+- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
+{
+	// just save the data
+	[_responseData appendData:data];
+}
+
+-(void)connectionDidFinishLoading:(NSURLConnection *)connection
+{
+	NSDictionary *plistDictionary;
+	NSPropertyListFormat plistFormat;
+	NSString *plistError;
+	
+	NSDictionary *appDictionary;
+	
+	NSString *appRedirect;
+	NSString *appVersion;
+	NSString *appOnline;
+	NSDate *appReleaseDate;
+	NSString *appDownload;
+	NSString *appDescription;
+	
+	// read in the recently downloaded plist
+	plistDictionary = [NSPropertyListSerialization propertyListFromData:_responseData
+													   mutabilityOption:NSPropertyListImmutable
+																 format:&plistFormat
+													   errorDescription:&plistError];
+	if ( !plistDictionary ) {
+		[self connection:connection didFailWithError:[ChazUpdateError errorWithString:plistError]];
+		return;
+	}
+	// make sure the root object is a dictionary
+	if ( ![NSStringFromClass([plistDictionary class]) isEqualToString:@"NSCFDictionary"] ) {
+		[self connection:connection didFailWithError:[ChazUpdateError errorWithString:@"the version information file is ill-formatted"]];
+		return;
+	}
+	appDictionary = [plistDictionary objectForKey:_name];
+	if ( !appDictionary ) {
+		[self connection:connection didFailWithError:[ChazUpdateError errorWithString:@"no version information for this application"]];
+		return;
+	}
+	
+	// see if the version information for this app is in another file
+	if ( appRedirect = [appDictionary objectForKey:@"Redirect"] ) {
+		// recursively follow the redirection
+		[[ChazUpdate alloc] initWithURL:appRedirect name:_name verbose:_verbose];
+		[self kill];
+		return;
+	}
+	
+	// read other useful information about the app
+	appVersion = [appDictionary objectForKey:@"Version"];
+	appReleaseDate = [NSDate dateWithNaturalLanguageString:[appDictionary objectForKey:@"ReleaseDate"]];
+	appOnline = [appDictionary objectForKey:@"MoreInfoURL"];
+	appDownload = [appDictionary objectForKey:@"DownloadURL"];
+	appDescription = [appDictionary objectForKey:@"Description"];
+	
+	if ( !appReleaseDate ) {
+		[self connection:connection didFailWithError:[ChazUpdateError errorWithString:@"missing version information"]];
+		return;
+	}
+	
+	if ( !appVersion ) {
+		appVersion = @"";
+	}
+	
+	if ( [ChazAppBuildDate() compare:appReleaseDate] == NSOrderedAscending ) {
+		// there is a new version, display message
+		int choice;
+		
+		NSString *desc;
+		NSString *mainBtn;
+		NSString *alternate;
+		NSString *other;
+		
+		if ( appDescription ) {
+			desc = appDescription;
+		}
+		else {
+			desc = [NSString stringWithFormat:@"A new version of %@ is available!  Would you like to learn more about the new version now?", _name];
+		}
+		if ( appOnline ) {
+			mainBtn = @"Learn More";
+			other = @"Cancel";
+		}
+		else {
+			mainBtn = @"OK";
+			other = nil;
+		}
+		if ( appDownload ) {
+			alternate = @"Download";
+		}
+		else {
+			alternate = nil;
+		}
+		
+		choice = NSRunInformationalAlertPanel( [NSString stringWithFormat:@"New Version: %@ %@", _name, appVersion],
+											   desc, mainBtn, alternate, other );
+		
+		if ( choice == NSAlertDefaultReturn && appOnline ) {
+			[[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:appOnline]];
+		}
+		else if ( choice == NSAlertAlternateReturn ) {
+			[[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:appDownload]];
+		}
+	}
+	else if ( _verbose ) {
+		// alert that the user has the latest version if we're in verbose mode
+		NSRunInformationalAlertPanel( [NSString stringWithFormat:@"%@ %@", _name, ChazAppVersion()],
+									  @"You have the latest version of %@.", @"OK", nil, nil, _name );
+	}
+	
+	[self kill];
+}
+
+- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
+{
+	if ( _verbose )
+	{
+		// check failed, display an error
+		NSRunAlertPanel( @"Update Check Failed", @"Check could not get new version data.\nError code #%i (%@)", @"OK", nil, nil, [error code], [error localizedDescription] );
+	}
+	
+	[self kill];
+}
+
+- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse
+{
+	// handle http redirection
+	return request;
+}
+
+
+@end
+
+
+#pragma mark API Functions
+
+void ChazCheckForUpdate( id url, BOOL userRequested )
+{
+	[[ChazUpdate alloc] initWithURL:url name:ChazAppName() verbose:userRequested];
+}
+
+void ChazCheckForUpdateWithName( id url, NSString *appName, BOOL userRequested )
+{
+	[[ChazUpdate alloc] initWithURL:url name:appName verbose:userRequested];
+}
+
+
+NSString *ChazAppName()
+{
+	NSString *name;
+	
+	name = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleExecutable"];
+	if ( name && ![name isEqualToString:@""] ) {
+		return name;
+	}
+	name = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleName"];
+	if ( name && ![name isEqualToString:@""] ) {
+		return name;
+	}
+	return @"";
+}
+
+NSString *ChazAppVersion()
+{
+	NSString *vers;
+	
+	vers = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
+	if ( vers && ![vers isEqualToString:@""] ) {
+		return vers;
+	}
+	vers = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];
+	if ( vers && ![vers isEqualToString:@""] ) {
+		return vers;
+	}
+	return @"";
+}
+
+NSDate *ChazAppBuildDate()
+{
+	return [NSDate dateWithNaturalLanguageString:[NSString stringWithFormat:@"%s %s", __TIME__, __DATE__]];
+}
+